- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/50 - Preparation of sulfur dioxide
Patent holdings for IPC class C01B 17/50
Total number of patents in this class: 142
10-year publication summary
|
6
|
6
|
14
|
4
|
12
|
10
|
13
|
10
|
13
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13949 |
11 |
| Haldor Topsøe A/S | 637 |
8 |
| Topsoe A/S | 1012 |
8 |
| ThyssenKrupp AG | 3468 |
6 |
| ThyssenKrupp Industrial Solutions AG | 630 |
6 |
| Innovator Energy LLC | 72 |
5 |
| SABIC Global Technologies B.V. | 4498 |
5 |
| Bayer Intellectual Property GmbH | 2398 |
4 |
| OCP S.A. | 83 |
4 |
| Peregrine Hydrogen Inc. | 17 |
4 |
| Shell Oil Company | 2089 |
3 |
| Aramco Services Company | 4162 |
3 |
| China Petroleum & Chemical Corporation | 2080 |
3 |
| National University Corporation Kumamoto University | 409 |
3 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12503 |
3 |
| D-crbn BV | 14 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3440 |
2 |
| Uop LLC | 4322 |
2 |
| Membrane Technology and Research, Inc. | 91 |
2 |
| Outotec (Finland) Oy | 458 |
2 |
| Other owners | 55 |